Patents by Inventor Per Lilja

Per Lilja has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11959361
    Abstract: The invention relates to a pneumatically operated drill hammer, comprising a piston and a distributor axially arranged relative to each other in a housing, the piston being arranged to be moved axially between a first position and a second position. The drill hammer further includes a pneumatic drive system, including a drive chamber, a return chamber and a plurality of channels for distribution of drive gas in said drive system. The return chamber is arranged at a lower side of the piston and the drive chamber is arranged at an upper side of the piston, wherein the drive chamber is defined by a variable space enclosed by at least the housing, the piston and the distributor. The drive chamber includes at least one inlet port and at least one exhaust port arranged at a circumference of the drive chamber.
    Type: Grant
    Filed: October 23, 2020
    Date of Patent: April 16, 2024
    Assignee: EPIROC DRILLING TOOLS AKTIEBOLAG
    Inventors: Per-Anders Karlsson, Thomas Lilja, Ernst Arne Johan Bram, Magnus Gustavsson
  • Publication number: 20240063780
    Abstract: The present invention describes a high voltage pulse generator unit comprising a primary side, a transformer and a secondary side, wherein the primary side comprises a winding and wherein the secondary side comprises multiple windings and multiple pulse module units (PMUs), and wherein each PMU comprises the winding and a switching element.
    Type: Application
    Filed: December 14, 2021
    Publication date: February 22, 2024
    Applicant: OPTICEPT TECHNOLOGIES AB
    Inventors: Per Lilja, Hanshenric Carenborn
  • Publication number: 20230371502
    Abstract: The present invention describes a method for treating a biological material, said method comprising exposing the biological material to vacuum impregnation or pressure impregnation, preferably vacuum impregnation, in an aqueous impregnation solution comprising at least one surfactant.
    Type: Application
    Filed: October 22, 2021
    Publication date: November 23, 2023
    Inventors: Eda DEMIR WESTMAN, Katarzyna Maria DYMEK-KRAKOWIAK, Bengt EKELUND, Per LILJA, Nils RHODIN, Stephen KWAO, Ahmad HUSAIN
  • Publication number: 20230366812
    Abstract: An IR imaging device includes an optical element receiving infrared radiation from a scene, a filter blocking IR radiation outside of a particular range of wavelengths, an array of sensor pixels to capture an image of the scene based on infrared radiation received through the optical element and filter, the array of sensor pixels comprising a first array of sensor pixels to image gas in within a first spectral bandwidth, and a second array of sensor pixel to sense IR radiation in a second spectral bandwidth where gas is not detected, a read-out integrated circuit (ROIC) and logic circuitry to generate a first image sensed by the first array and a second image sensed by the second array, and gas detection logic to detect the presence of gas in the first image.
    Type: Application
    Filed: April 24, 2023
    Publication date: November 16, 2023
    Inventors: Hakan E. Nygren, Jonas Sandsten, Per Lilja, Marta Barenthin-Syberg, Henning Hagman, Eric A. Kurth, Brian B. Simolon, Naseem Y. Aziz, Ulf Wallgren
  • Patent number: 11635370
    Abstract: An IR imaging device includes an optical element receiving infrared radiation from a scene, a filter blocking IR radiation outside of a particular range of wavelengths, an array of sensor pixels to capture an image of the scene based on infrared radiation received through the optical element and filter, the array of sensor pixels comprising a first array of sensor pixels to image gas in within a first spectral bandwidth, and a second array of sensor pixel to sense IR radiation in a second spectral bandwidth where gas is not detected, a read-out integrated circuit (ROIC) and logic circuitry to generate a first image sensed by the first array and a second image sensed by the second array, and gas detection logic to detect the presence of gas in the first image.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: April 25, 2023
    Assignee: FLIR Systems AB
    Inventors: Hakan E. Nygren, Jonas Sandsten, Per Lilja, Marta Barenthin-Syberg, Henning Hagman, Eric A. Kurth, Brian B. Simolon, Naseem Y. Aziz, Ulf Wallgren
  • Publication number: 20220400711
    Abstract: The present invention describes a PEF system (I) comprising a (channel 2) for PEF treatment of a material, opposite electrode units (3), (4) and at least one conveyor belt (5), wherein said at least one conveyor belt (5) is arranged in the channel (2), in between the opposite electrode units (3), (4) and in close proximity to one of these electrode units (3), (4), wherein said at least one conveyor belt (5) is perforated and/or comprises one or more PEF permeable sections, preferably is perforated, more preferably is a net.
    Type: Application
    Filed: November 27, 2020
    Publication date: December 22, 2022
    Applicant: OPTICEPT TECHNOLOGIES AB
    Inventors: Per LILJA, Nils RHODIN
  • Publication number: 20220361533
    Abstract: The present invention describes a PEF (pulsed electric field) chamber 1 intended for treating a flow with electric field pulses, said PEF chamber comprising a PEF treatment tube 2 and opposite electrode units 3, 4, wherein said opposite electrode units 3, 4 each has one flow receiving end 5a, 5b and one flow exit end 6a, 6b, wherein the PEF treatment tube 2 comprises exit flow portions 7a, 7b arranged subsequent to the flow exit ends 6a, 6b of the electrode units 3, 4 in the intended flow direction, and thus functioning as an extension of the opposite electrode units 3, 4 in the intended flow direction, wherein the exit flow portions 7a, 7b of the PEF treatment tube 2 are arranged to provide a geometrical narrowing 20 subsequent to the flow exit ends 6a, 6b.
    Type: Application
    Filed: September 11, 2020
    Publication date: November 17, 2022
    Inventor: Per LILJA
  • Patent number: 11200697
    Abstract: An ambient temperature calibration process includes, in accordance with an embodiment, determining an ambient temperature calibration value for a global external resistance associated with a read out integrated circuit (ROIC) of an image capture component comprising a sensor array comprising a focal plane array of microbolometers arranged on the ROIC; determining an ambient temperature calibration value for a sensor integration time associated with the ROIC; and determining an ambient temperature calibration mapping for an offset mapping associated with the ROIC.
    Type: Grant
    Filed: December 11, 2019
    Date of Patent: December 14, 2021
    Assignee: FLIR Systems AB
    Inventors: Jonas Sandsten, Per Lilja, Henning Hagman, Marta Barenthin-Syberg, Tien Nguyen
  • Patent number: 10694770
    Abstract: The present invention describes a PEF (pulsed electric field) chamber, said PEF chamber 1 comprising a tube 2 with two open ends 3, 4 having attachment means 5, 6 enabling the PEF chamber 1 to be a plug-in device, wherein the tube 2 has a length L from one open end 3 to the other open end 4 and an inner width IW from one side of the tube to the other side of the tube in a cross section being perpendicular to the length L thereof, wherein the tube 2 has a geometrical narrowing of the inner width IW somewhere along the length L of the tube 2, and wherein the PEF chamber 1 comprises a grid 9 of an insulating material being arranged at the geometrical narrowing or electrode units 7, 8 being arranged opposite each other at the geometrical narrowing of the inner width IW along the length L of the tube 2. The plug-in feature of the present invention renders the PEF chamber to function as an l attachable and disposable PEF chamber.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: June 30, 2020
    Assignee: Arc Aroma Pure AB
    Inventors: Pär H Henriksson, Per Lilja
  • Publication number: 20200202569
    Abstract: An ambient temperature calibration process includes, in accordance with an embodiment, determining an ambient temperature calibration value for a global external resistance associated with a read out integrated circuit (ROIC) of an image capture component comprising a sensor array comprising a focal plane array of microbolometers arranged on the ROIC; determining an ambient temperature calibration value for a sensor integration time associated with the ROIC; and determining an ambient temperature calibration mapping for an offset mapping associated with the ROIC.
    Type: Application
    Filed: December 11, 2019
    Publication date: June 25, 2020
    Inventors: Jonas Sandsten, Per Lilja, Henning Hagman, Marta Barenthin-Syberg, Tien Nguyen
  • Publication number: 20200025679
    Abstract: An IR imaging device includes an optical element receiving infrared radiation from a scene, a filter blocking IR radiation outside of a particular range of wavelengths, an array of sensor pixels to capture an image of the scene based on infrared radiation received through the optical element and filter, the array of sensor pixels comprising a first array of sensor pixels to image gas in within a first spectral bandwidth, and a second array of sensor pixel to sense IR radiation in a second spectral bandwidth where gas is not detected, a read-out integrated circuit (ROIC) and logic circuitry to generate a first image sensed by the first array and a second image sensed by the second array, and gas detection logic to detect the presence of gas in the first image.
    Type: Application
    Filed: September 27, 2019
    Publication date: January 23, 2020
    Inventors: Hakan E. Nygren, Jonas Sandsten, Per Lilja, Marta Barenthin-Syberg, Henning Hagman, Eric A. Kurth, Brian B. Simolon, Naseem Y. Aziz, Ulf Wallgren
  • Publication number: 20190151817
    Abstract: The present invention describes a PEF (pulsed electric field) chamber comprising a PEF treatment tube 2, a casing 3 and at least two electrode 5 units 4, 5, wherein said at least two electrode units 4, 5 are insertable to be fixated in the casing 3 and into the PEF treatment tube 2.
    Type: Application
    Filed: April 19, 2017
    Publication date: May 23, 2019
    Inventors: Pär H HENRIKSSON, Per LILJA
  • Publication number: 20180116256
    Abstract: The present invention describes a PEF (pulsed electric field) chamber, said PEF chamber 1 comprising a tube 2 with two open ends 3, 4 having attachment means 5, 6 enabling the PEF chamber 1 to be a plug-in device, wherein the tube 2 has a length L from one open end 3 to the other open end 4 and an inner width IW from one side of the tube to the other side of the tube in a cross section being perpendicular to the length L thereof, wherein the tube 2 has a geometrical narrowing of the inner width IW somewhere along the length L of the tube 2, and wherein the PEF chamber 1 comprises a grid 9 of an insulating material being arranged at the geometrical narrowing or electrode units 7, 8 being arranged opposite each other at the geometrical narrowing of the inner width IW along the length L of the tube 2. The plug-in feature of the present invention renders the PEF chamber to function as an 1 attachable and disposable PEF chamber.
    Type: Application
    Filed: April 20, 2016
    Publication date: May 3, 2018
    Inventors: Pär H HENRIKSSON, Per LILJA
  • Patent number: 4561319
    Abstract: The invention is directed to an arrangement for journalling large eccentric forces which are generated by a rotating eccentric assembly. One problem associated with the bearing arrangements of these forces is that the size of the bearing is extremely large which, in turn, results in shaft speed limits that are readily exceeded. By dividing the eccentric assembly into two or more tubular eccentric weights arranged coaxially in relation to each other and journalling these in separate bearings on shaft journals connected to the structure to which vibratory motion is to be imparted, a distribution of the eccentric forces is obtained together with a reduction of the bearing dimensions. The eccentric weights are driven by means of a drive rod arranged on a drive shaft interacting with the eccentric weights. The journalling arrangement and eccentric assembly can be part of a vibration arrangement for imparting vibratory motion to the roller structure of a compactor for compacting soil, asphalt or the like.
    Type: Grant
    Filed: January 25, 1984
    Date of Patent: December 31, 1985
    Assignee: Dynapac AB
    Inventor: Per Lilja